JPS6220751A - Clearview screen - Google Patents

Abstract

PURPOSE:To improve the distribution of supplied air pressure in a clearance and improve the buoyancy of a rotary frame without any increase of said air pressure and air consumption by blowing compressed air to two V-shaped slope internal surfaces of a fixed part through a plurality of blow holes arranged in a plurality of rows. CONSTITUTION:Air is blown into a clearance from the external surface of a rotary frame 7 through a blow hole comprising holes 401-403 of three rows 41-43 arranged on each of two sloped internal surfaces 6a and 6b forming the V-shaped internal surface 6 of a fixed frame 5. In this case, the rows of the blow holes on the sloped internal surfaces 6a and 6b are taken at three or more. Therefore, air pressure distribution in said clearance is improved and a buoyant force working on the rotary frame 7 can be substantially improved without any increase of supplied air pressure and air for consumption. Furthermore, fresh water at normal pressure is introduced from a water passage 54 and atomized into air blow passages 45a and 45b through a carbureter 50 and nozzles 52a and 52b, as mixed with blowing air, thereby putting the entire surface of the clearance 13 into a humid condition. Consequently, solid contact between the internal surface 6 of the fixed frame 5 and the external surface of the rotary frame 7 can be prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotating window in which a rotating frame is floated and rotated by air force within a fixed frame, and in particular, it relates to an improvement in the floating and rotating performance of the rotating frame. Concerning means.

[Conventional technology]

A swing window is installed on the outer wall of a ship or a wheelhouse window, and uses centrifugal force to remove water droplets adhering to the glass plate by rotating the glass plate at high speed.

FIG. 3 is a partially sectional front view showing an example of a conventional pivot window. FIG. 4 is a partial cross-sectional view taken along line IV--IV in FIG. 3.

The conventional swing window 1 basically includes a fixed frame 5 that is attached to an outer wall 3 of a ship, etc., and a transparent plate 9 such as a glass plate, which is rotatably assembled inside the fixed frame 5 with a gap 13 left.
is attached to the rotating frame 7, and an air blowing hole 15 that blows air into the gap 13 and floats the rotating frame 7 within the fixed frame 5.
and a drive means including an induction motor 22 for rotationally driving the rotating frame 7 floated within the rotating frame 5.

More specifically, the fixed frame 5 is attached to an outer wall 3 of a ship or the like. As shown in FIG. 4, the fixed frame 5 has a cylindrical shape with a concave inner circumferential surface 6 having a V-shaped vertical cross section. A rotary frame 7 is located inside this fixed frame 5. The rotating frame 7 is the fixed frame 5
It has a convex outer circumferential surface 8 with a V-shaped vertical cross-section corresponding to the inner circumferential surface 6 of.

The rotating frame 7 is assembled into the fixed frame 5 with a gap 13 left between its outer circumferential surface 8 and the inner circumferential surface 6 of the fixed frame 5. Therefore, the rotating frame 7 is rotatable within the plane in which the transparent plate opening extends. In order to reduce the rotational resistance of the rotating frame 7, that is, the frictional resistance between the inner circumferential surface 6 of the fixed frame 5 and the outer circumferential surface 8 of the rotating frame 7, the rotating frame 7 is moved by the air force of the air blowing means. It is floated within the fixed frame 5.

To explain this air blowing means, air blowing holes 15 are distributed at equal intervals in the circumferential direction on each of the two inner circumferential surfaces 6a and 6b forming the V-shaped inner circumferential surface 6 of the fixed frame 5. are formed in multiple pieces.

This air blowing hole 15 has one end communicating with the gap 13, and the other end is connected to a compressor (not shown) via an air supply pipe 17.

The induction motor 22 has a fixed frame 5 on the stator side and a rotating frame 7 on the stator side.
is on the rotor side. That is, stator cores 23 are arranged around the entire circumference of the fixed frame 5, and stator windings 25 are wound around the stator cores 23. On the other hand, the rotor frame 7 has a cylindrical rotor core 27.
It is attached concentrically with the rotating frame 7, and a copper plate cylinder 29 is provided above it.

To explain the operation, the compressor is operated to send compressed air to the air supply pipe 17. Air supply pipe 1
The air sent to gap 1 passes through air blow hole 15.
It is blown into the inside of 3.

The air forcefully blown into the gap 13 hits the outer peripheral surface of the rotating frame 7 and exerts a force thereon. This force acts on the rotating frame 7 in the direction away from the fixed frame 5, and therefore the rotating frame 7
will float within the fixed frame 5. Incidentally, component forces in undesired directions, that is, component forces perpendicular to the rotating surface of the rotating frame 7 are canceled out by the two air blowing holes 15. In this way, the rotary frame 7 is rotatably supported within the fixed frame 5 in a well-balanced manner.

When the induction motor 22 is operated in this state, the rotating frame 7 rotates. Arrow A in FIG. 1 indicates an example of the rotation direction. When the rotating frame 7 rotates in this way, the rotating frame 7
Since the transparent plate 9 attached to the transparent plate 9 also rotates, water droplets and the like on the transparent plate 9 are removed by centrifugal force. Thereby, good visibility can be ensured through the pivot window 1.

[Problem that the invention seeks to solve]

When various prototypes of the rotating window 1 as described above were manufactured, the rotating frame 7
It has been found that the floating blade is not always sufficient for this purpose.

In this case, it is possible to increase the number of floating blades to some extent by increasing the supply air pressure and the amount of air consumption of the compressed air, but this creates another problem in that the compressor, air supply pipe, etc. must be strengthened. arise.

Further, when a ship or the like suddenly changes its traveling direction while the turning window 1 is operated, the rotating frame 7 causes precession. This, together with the fact that the above-mentioned floating blades are not sufficient, causes solid contact (so-called galling) between the outer circumferential surface 8 of the rotating frame 7 and the inner circumferential surface 6 of the fixed frame 5, which causes the respective inner circumferential surfaces to 6 and the outer circumferential surface 8, which deteriorates the flying and turning performance of the turning window 1 and shortens its life.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a turning window which improves the above-mentioned problems and further improves the floating turning performance of the rotating frame.

[Means for solving problems]

The swing window according to the first invention has a plurality of air blowing means distributed at approximately equal intervals in the circumferential direction on each of two inner circumferential surfaces forming the V-shaped inner circumferential surface of the fixed frame. It is characterized by having three or more rows of air blowing holes.

The revolving window according to the second invention has a plurality of air blowing means distributed at approximately equal intervals in the circumferential direction on each of the two inner circumferential surfaces forming the figure 7-shaped inner circumferential surface of the fixed frame. The rotating window is provided with three or more rows of air blowing holes, and the swirl window further includes a water mist mixing means for mixing water mist into the compressed air supplied to each of the rows of air blowing holes. It is characterized by

[Effect]

In the revolving window according to the first invention, the swivel window provided on each of the two inner circumferential surfaces forming the V-shaped inner circumferential surface of the fixed frame.
Air is blown into the gap between the rotary frame and the outer circumferential surface of the rotary frame from the rows of blow holes.

In that case, since there are three or more rows of blowholes on the inner peripheral surface, the air pressure distribution within the gap is greatly improved, and the floating blade against the rotating frame can be used without increasing the supply air pressure or the amount of air consumption. is significantly improved.

The swing window according to the second aspect of the invention further includes a mist mixing means, so that the entire circumference of the gap is moistened with mist water.

Since this water acts as a lubricant, even if the rotating frame comes close to the fixed frame, solid contact between the inner circumferential surface of the fixed frame and the outer circumferential surface of the rotating frame is prevented.

〔Example〕

FIG. 1 shows a swing window according to an embodiment of the present invention.
FIG. 1 is a partial cross-sectional view. FIG. 2 is a partial perspective view of the fixed frame for showing the blowout hole rows of FIG. 1. In FIG. 2, parts not related to the explanation are omitted. In the following, configurations that are different from the conventional example described above will be mainly described.

In the swing window 11 of this embodiment, the fixed frame 5 is formed to have a convex inner circumferential surface 6 having a V-shaped vertical cross section. Further, the rotating frame 7 has a concave outer circumferential surface 8 having a 7-shaped vertical cross section corresponding to the inner circumferential surface 6 of the fixed frame 5 . Similarly to the conventional example, a gap 13 is formed between the inner circumferential surface 6 and the outer circumferential surface 8, and the rotary frame 7 is rotatably incorporated into the fixed frame 5.

Next, the air blowing means of this embodiment will be explained.

Referring also to FIG. 2, a plurality of air inlets are provided on each of the two inner circumferential surfaces 5a and 5b forming the V-shaped inner circumferential surface 6 of the fixed frame 5, distributed at approximately equal intervals in the circumferential direction. Hole 401-4
Three rows of blow hole rows 41 to 43 each having a diameter of 0.03 are formed. In this example, the center blow hole row 4
The air blowing holes 401 forming the air blowing holes 401 forming the air blowing holes 402 and 403 forming the blowing hole rows 42 and 43 on both sides thereof
For example, the diameter of the former is 0°4 mmφ, and the diameter of the latter is 0.3 mm+φ.

Further, in this example, the air blowing holes 402 and 403 forming the blowing hole rows 42 and 43 are located in a straight line with each other in the middle part of the air blowing holes 401 forming the blowing hole row 41. .

The blow hole rows 41 to 43 of the inner circumferential surfaces 6a and 6b are respectively connected to two ventilation passages 45a and 45b formed in the fixed frame 5 so as to extend around the entire circumference. These ventilation passages 45a, 45b have a filter 46 provided at one location.
It communicates with the air supply pipe 17 via a and 46b,
The air supply pipe 17 is connected to a compressed air source (not shown) such as a compressor or a blower.

Next, the driving means C1 will be described. An induction motor 22 serving as a driving means is provided approximately at the center of the gap 13. That is, a stator core 23 and a stator winding 25 are provided near the top of the convex inner peripheral surface 6 of the fixed frame 5, and a stator 30 of the induction motor 22 is formed by these. Note that the stator winding 25 is not shown in the figure because it is molded. Further, the concave outer peripheral surface 8 of the rotating frame 7
A rotor core 27 having a copper plating layer 28 formed on its surface is provided near the bottom of the rotor core 27 to form a rotor 31 of the induction motor 22.

In this example, the fixed frame 5 is fixed to the outer wall 3 via a frame 56, a leaf spring 58, and a frame 60. Also, OT
indicates the outside (outboard side) of the turning window 11, IN indicates the inside (inboard side), and DN indicates the lower side.

To explain the operation, for example, a compressor is operated to send compressed air AR into the air supply pipe 17. The air sent into the air supply pipe 17 is passed through two filters 46a.
, 46b and sent into the ventilation passages 45a, 45b. The ventilation passages 45a, 45b are annular passages extending around the entire circumference of the fixed frame 5, and the air sent therein is circulated therethrough and uniformly distributed within the ventilation passages 45a, 45b. The air uniformly dispersed in this way flows through the ventilation passage 45a.
, 45b, the air is uniformly and forcefully blown into the gap 13 over the entire circumference from the blow hole rows 41 to 43 provided along the lines 41 to 43. The air blown into the gap 13 exerts a well-balanced force on the outer circumferential surface 8 of the rotary frame 7, similar to the conventional example, and causes the rotary frame 7 to float within the fixed frame 5. Furthermore, the air sent into the gap 13 flows in both outward directions within the gap 13 and is discharged to the outside thereof.

The rotating frame 7, which is floated and supported within the fixed frame 5 in this manner, is rotated by the induction motor 22 as in the conventional example, and water droplets and the like adhering to the transparent plate 9 are removed by centrifugal force. Thereby, good visibility can be ensured through the swing window 11 even if rain or sea spray falls on the ship or the like. In this case, the rotational speed of the induction motor 22 is, for example, about 500 to 800 rpm.

In this case, the supply pressure of compressed air and the amount of air consumption are the same as in the conventional example by making the blow hole rows of the inner circumferential surfaces 6a and 6b of the fixed frame 5 into three rows of blow hole rows 41 to 43, respectively. conditions (e.g. 0°4~0, 6 kg/cm, respectively)
It was confirmed by the prototype that even when the blade is blown to the rotary frame 7, it is improved by about 2.5 times compared to the conventional example described above. The air blown out from the inner and outer two rows of blow holes 42 and 43 acts like a sealing effect, suppressing the dissipation of the blowing air pressure from the center blow hole row 41, and As a result, it is interpreted that the air pressure distribution within the gap 13 is significantly improved.

Incidentally, the number of rows of blow holes provided on each of the inner circumferential surfaces 6a and 6b of the fixed frame 5 is not necessarily limited to three rows, and may be four or more rows, in which case the amount of air consumption may be increased. If this is not desired, the diameter of the air blow holes forming the blow hole array may be reduced accordingly. Furthermore, as shown in Figure 2, for example, as shown in Figure 2, it is better to increase the diameter of the air blowing holes that make up the blowing hole row, and to make the diameter smaller toward the outside, while reducing the amount of air consumed. This is preferable because a blade can be obtained. In addition, regarding the mutual positional relationship of the air blowing holes that make up each blowing hole row, for example, as shown in Figure 2, it is better to arrange them alternately to reduce the dissipation of air pressure in the central blowing hole row. It is preferable from the viewpoint of

By the way, this turning window 11 further includes a water mist mixing means for mixing water mist into the compressed air AR supplied to the blow hole rows 41 to 43. That is, referring to FIG. 1, a vaporizer 50 is provided at the entrance of the ventilation passages 45a and 45b, and the vaporizer 50 is connected to a water passage 54 to which fresh water at normal pressure is supplied, and a water passage 54 to which fresh water at normal pressure is supplied. Two nozzles 52a and 5 are connected to the ventilation passages 45a and 45b, respectively.
2b.

In the vaporizer 50 as described above, the nozzles 52a, 52 do not need to be particularly pressurized with the water supplied to the water passage 54.
Water is sucked out from there by the flow of air passing through the tip of b and becomes a mist, which is mixed with the air and spreads around the entire circumference of the ventilation passages 45a and 45b, resulting in the above-mentioned blowing. Air containing mist of moisture is blown into the gap 13 from the hole rows 41 to 43. In this case, the reason why the water is made into a mist is to spread the water evenly over the entire circumference of the injection hole rows 41 to 43. Even if the water spreads widely, it is not preferable because the water creates a vortex within the gap 13 and creates resistance to the rotation of the rotating frame 7. Therefore, in more detail, the water supplied to the gap 13 is made into a fine mist,
Preferably, the gap 13 is wet-lubricated to the minimum extent necessary. Therefore, for example, the vaporizer 50 may be provided with a needle to adjust the amount, size, etc. of mist water mixed into the air.

The mist water supplied into the gap 13 as described above causes the gap 13, more specifically, the inner circumferential surface 6 of the fixed frame 5 and the outer circumferential surface 8 of the rotating frame 7 to be It is kept evenly moist throughout the journey. Since this water acts as a lubricant, even if the rotating frame 7 comes close to the fixed frame 5 due to precession, etc., the inner peripheral surface of the fixed frame 5 6 and the outer circumferential surface 8 of the rotating frame 7 are prevented from forming solid contact (galling). Further, the water also removes dust such as salt particles adhering to the gap 13, thereby ensuring good floating and turning performance of the rotating frame 7 for a long period of time.

Note that when atomized water is mixed into the compressed air as described above, it is preferable to take measures to prevent moisture from scattering to the inside IN of the swing window. Therefore, in this example, the discharge port 6 is located on the circumference of the outlet portion of the frame 56 to the inner side IN of the gap 13.
6 is provided, and the humid air discharged to the inside IN is discharged to the outside through the discharge port 66 and a discharge passage 68 connected thereto. Furthermore, in this example, frame 5
A fixed transparent plate 76 such as a glass plate is attached to a frame 70 that can be opened and closed with respect to 6, and a ventilation passage 72 and a gap 74 extending circumferentially are provided between both frames 56 and 70. Dry air is used as the compressed air AR and is blown into the area surrounded by the transparent plate 9 and the fixed transparent plate 76 through the gap 74. Plate 9 and fixed transparent plate 76
In addition to preventing fogging, moist air from the gap 78
1 into the discharge port 66.

Finally, in the above embodiment, the fixed frame 5 is convex and the rotary frame 7 is concave, but the present invention is not limited to this, and the opposite may be used as long as the respective cross sections correspond to each other. Further, although the induction motor 22 incorporated in the fixed frame 5 and the rotating frame 7 is shown as a driving means, the rotating frame 7 is not limited to this.
It is also possible to provide a configuration in which a blade or the like is provided and air is blown onto the blade to rotate it.

〔Effect of the invention〕

As described above, according to the first invention, a large floating blade relative to the rotary frame can be obtained without increasing the supply air pressure or the amount of air consumption. Therefore, the rotary frame can be rotated stably and favorably even against vibrations, and it is also possible to manufacture a large-diameter pivot window.

According to the second invention, in addition to the above effects, even if the rotating frame comes close to the fixed frame due to precession or the like, the inner circumferential surface of the fixed frame and the outer circumferential surface of the rotating frame This has the effect of preventing solid contact with the material. by this,
Stable performance is obtained and the life of the pivot window is greatly extended.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a pivot window according to an embodiment of the present invention. FIG. 2 is a partial perspective view of the fixed frame for showing the blowout hole rows of FIG. 1. FIG. 3 is a partially sectional front view showing an example of a conventional pivot window. FIG. 4 is a partial cross-sectional view taken along line IV--IV in FIG. 3. 5... Fixed frame, 6... Inner circumferential surface, 6a, 6b... Inner circumferential surface, 7... Rotating frame, 8... Outer circumferential surface, 9... Transparent plate, 13...・Gap, 22...Induction motor, 41~
43...Blow hole row, 401-403...Air blow hole/Agent Patent attorney Keiji Yamamoto Figure 1 Figure 2

Claims (2)

[Claims] (1) A cylindrical fixed frame having an inner circumferential surface with a V-shaped cross-section, and an outer circumferential surface with a V-shaped cross-section corresponding to the V-shape of the fixed frame, and the outer circumferential surface and the inner circumference of the fixed frame. A rotary frame is rotatably incorporated within a fixed frame with a gap left between the frame and a transparent plate is attached, and an air blower that levitates the rotary frame within the fixed frame by blowing compressed air into the gap. In the swing window, the air blowing means includes two oblique inner circumferential surfaces forming a V-shaped inner circumferential surface of the fixed frame. A swing window, each of which is provided with three or more rows of air blow holes each consisting of a plurality of air blow holes distributed at approximately equal intervals in the circumferential direction. (2) A cylindrical fixed frame having an inner circumferential surface with a V-shaped cross-section, and an outer circumferential surface with a V-shaped cross-section corresponding to the V-shape of the fixed frame, and the outer circumferential surface and the inner circumference of the fixed frame. A rotary frame is rotatably incorporated within a fixed frame with a gap left between the frame and a transparent plate is attached, and an air blower that levitates the rotary frame within the fixed frame by blowing compressed air into the gap. In the swing window, the air blowing means includes two oblique inner circumferential surfaces forming a V-shaped inner circumferential surface of the fixed frame. Each of the air blowing holes is provided with three or more rows of air blowing holes each consisting of a plurality of air blowing holes distributed at approximately equal intervals in the circumferential direction, and the swirl window is provided with a compressor that is supplied to each of the air blowing hole rows. A swing window further comprising a mist water mixing means for mixing mist water with air.